CMOS digital intra-oral sensor for x-ray radiography

Xinqiao Liu; Andrew Byczko; Marcus Choi; Lap Chung; Hung Do; Boyd Fowler; Radu Ispasoiu; Kumar Joshi; Todd Miller; Alex Nagy; David Reaves; Brian Rodricks; Doug Teeter; George Wang; Feng Xiao

doi:10.1117/12.878722

16 March 2011 CMOS digital intra-oral sensor for x-ray radiography

Xinqiao Liu, Andrew Byczko, Marcus Choi, Lap Chung, Hung Do, Boyd Fowler, Radu Ispasoiu, Kumar Joshi, Todd Miller, Alex Nagy, David Reaves, Brian Rodricks, Doug Teeter, George Wang, Feng Xiao

Author Affiliations +

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 79614M (2011) https://doi.org/10.1117/12.878722
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

In this paper, we present a CMOS digital intra-oral sensor for x-ray radiography. The sensor system consists of a custom CMOS imager, custom scintillator/fiber optics plate, camera timing and digital control electronics, and direct USB communication. The CMOS imager contains 1700 x 1346 pixels. The pixel size is 19.5um x 19.5um. The imager was fabricated with a 0.18um CMOS imaging process. The sensor and CMOS imager design features chamfered corners for patient comfort. All camera functions were integrated within the sensor housing and a standard USB cable was used to directly connect the intra-oral sensor to the host computer. The sensor demonstrated wide dynamic range from 5uGy to 1300uGy and high image quality with a SNR of greater than 160 at 400uGy dose. The sensor has a spatial resolution more than 20 lp/mm.

Citation Download Citation

Xinqiao Liu, Andrew Byczko, Marcus Choi, Lap Chung, Hung Do, Boyd Fowler, Radu Ispasoiu, Kumar Joshi, Todd Miller, Alex Nagy, David Reaves, Brian Rodricks, Doug Teeter, George Wang, and Feng Xiao "CMOS digital intra-oral sensor for x-ray radiography", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 79614M (16 March 2011); https://doi.org/10.1117/12.878722

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